Heating-stove



(No Model.)

J. B. OLDERSHAW.

- HEATING STOVE. No. 329,069. I Patented Oct. 2'7, 1885.

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UNITED STATES Prion.

PATENT HEATING-STOVE.

SPECIFICATION forming part of Letters Patent No. 329,069, dated October27, 1885.

Application filed April 18, 1885. Serial No. 162,687. (No model.)

To aZZ whom it may concern:

Be it known that I, J OHN B. OLDERSHAW, of Baltimore city, Maryland,have invented certain new and useful Improvements in Heat ing-Stoves, ofwhich the following is a specification, reference being had to'theaccompanying drawings, forming part hereof, in which- Figure l is aview, partly in section and partly in side elevation, of a stoveembodying my improvements in its construction. Fig. 2 is a detail viewshowing in plan View the diaphragm or partition-plate which forms thetop of the main firebox, and which supports the upper portions of thestove and Fig. 3 is a view of the under side of the casting which restsupon the casting shown in Fig. 2, and forms the lower ends of the airducts or flue.

Like letters mark the same parts in all the figures.

I shall first fully describe my invention, and afterward specificallypoint out the novelty thereof in the claims appended to thisspecification. I

Referring to the drawings by letter, A is the base of an ordinarycylinder coal-stove, and is or may be of any desirable well-knownpattern or construction.

B is the cylinder or firebox, provided, as is usual, with a door, a.

On the top of the fire-box rests a casting, 0, provided with a series ofopenings, 0 c c a, and alarger opening, 0, thelatter being formed in arearward-projecting portion of the cast ing. I There is also a largecentral opening, 0''.

D is a casting, which rests on the casting O, and with it forms thelower ends or openings for the air-duct hereinafter mentioned;

This casting has a central opening, ri to cor respond with the centralopening, a, in casting 0, and has a rear portion, cl, to rest directlyover the opening 0 in casting C.

At the rear of the fire-box isa fine or conduit, E, open at its bottomto receive air, and leading to and through the opening 0.

The casting 0 forms a base upon which the whole of the upper portion ofthe stove rests. This upper portion consists of three concentriccylinders, F G H, forming spaces F, G, and H. The spaces F and Hcommunicate near the top by means of flue f, and are smoke flues orchambers. The space G is an air-coir duit, and lies between the spaces Fand H. The lower end of this air-chamber is formed by the portions 01and d of casting D, and is open to receive air to be carried up, heated,and'delivered' through openings 9 in the top I of the stove, or it maybe distributed by fiues or pipes to an upper apartment.

J is a damper, shown in dotted lines in Fig. 2, by means of which theopenings 0 in casting C may be opened or closed at will. When they areopen, the products of combustion will pass through them and the chamberH, and thence out of the stove-pipe K. When they are closed, suchproducts will pass up through the central openings, 0 d, in castings Gand D; thence through chamber F, flue f, and chamber H to thestove-pipe, to pass out.

The advantages of my improved construction will be apparent, and needlittle mention. The heating capacity is greatly increased, for thereason that the whole exterior of the stove is in contact with the fireor the products of combustion, and the airchamber wholly surroundedthereby. A removable cover, L, or a culinary utensil may cover thecentral combus tion-chamber, F.

The improvements may also be applied to furnaces.

I claim as new and desire to secure by Letters Patent 1. In combination,the fire-box, the inner and outer cylinders communicating therewith,

the middle cylinder communicating with the outer air, the removablecover on the inner cylinder, and the damper at the bottom of the outercylinder, as set forth.

2. In combination,the firebox, and the three concentric cylinders abovethe fire-box, the inner and outer ones of which have communication withthe fire-box and the middle one with the outer air, the outer and innerones being connected near the top by a flue, the inner having aremovable cover and the outer a damper at the bottom, as set forth.

In testimony that I claim the foregoing I have signed my name hereto inthe presence of two subscribing witnesses.

JOHN B. OLDERSHAVV.

\Vitnesses:

WM. AMMER, J OHN OLDERSHAW.

